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Home > Products > Relays > Solid State Relays (SSR)

Toshiba Semiconductor and Storage TLP240A(LF1,F

Name: TLP240A(LF1,F
Brand: Toshiba Semiconductor and Storage
SKU: TLP240A(LF1,F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLP240A(LF1,F

Manufacturer:: Toshiba Semiconductor and Storage

Category:: Solid State Relays (SSR)

Package:: 4-SMD (0.300", 7.62mm)

Datasheet:: TLP240A(LF1,F.pdf

Description:: SSR RELAY SPST-NO 500MA 0-60V

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TLP240A(LF1,F) from Toshiba Electronic Devices & Storage Corporation is a halogen-free, normally-open photorelay IC comprising an infrared LED optically coupled to a photo MOSFET. It delivers 5000 Vrms isolation, 60 V OFF-state voltage, ≤2 Ω ON-state resistance, and supports up to 500 mA load current - ideal for replacing mechanical relays in smart metering and factory automation control circuits.

For engineers reviewing the TLP240A(LF1,F) datasheet, TLP240A(LF1,F) pinout, TLP240A(LF1,F) application, or TLP240A(LF1,F) equivalent, key selection criteria include reinforced insulation compliance (UL 1577/UL 508/cUL/VDE), through-hole DIP-4 packaging with 7.62-mm pitch, trigger LED current ≤3 mA, and thermal derating behavior across –40°C to +85°C operating range.

Technical Context

The TLP240A(LF1,F) integrates a GaAs infrared LED driver stage optically isolated from a dual-drain N-channel MOSFET output stage, enabling solid-state switching without galvanic connection. Its internal two-terminal configuration shorts pins 1–2 (LED anode/cathode) and pins 3–4 (MOSFET drains), simplifying PCB layout while maintaining 5000 Vrms dielectric strength.

It operates under UL 508-rated conditions with maximum ON-state current of 325 mA at 60°C ambient and supports pulsed loads up to 1.5 A. Safety certification includes UL 1577 (File E67349), cUL CSA 5A (E67349), UL 508 (E499232), CQC GB4943.1/GB8898, and VDE EN 60747-5-5 (with D4 option).

Key Specifications

Parameter	Value and Actual Design Meaning
Isolation Voltage	5000 Vrms min - enables reinforced insulation per IEC/EN 62368-1 and UL 508 for mains-connected equipment
OFF-State Output Voltage	60 V min - supports switching of 24–48 V DC control lines in industrial PLCs and energy meters
ON-State Resistance	2 Ω max - limits conduction loss to ≤500 mW at 500 mA, reducing thermal stress in compact layouts
Trigger LED Current	3 mA max - allows direct drive from low-power MCU GPIOs without external amplification
ON-State Current	500 mA max continuous - suitable for driving solenoids, indicator LEDs, and small actuators
Turn-On/Off Time	1 ms typ / 0.2 ms typ - enables fast response in security system alarm outputs and FA timing circuits
Package	DIP-4, 7.62-mm pitch - compatible with standard through-hole assembly and legacy board designs

Pinout & Package

Package: 4-pin DIP (TOSHIBA 11-5B2S), through-hole mounting, 7.62-mm lead pitch, halogen-free epoxy resin.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode	Positive input terminal of infrared LED; requires series resistor for current limiting from 3.3/5 V logic
2	Cathode	Ground return for LED; pins 1 and 2 are internally treated as a two-terminal device
3	Drain	Output switch terminal; connected internally to pin 4 to form single-pole, normally-open (1-Form-A) output
4	Drain	Redundant drain terminal; shorted to pin 3 to increase current handling and reduce trace inductance

Key Features

Feature	Design Value
Reinforced Insulation	5000 Vrms isolation withstand voltage certified to UL 1577, UL 508, and VDE EN 60747-5-5 (D4 option)
Low-Drive LED Interface	≤3 mA trigger current enables direct microcontroller GPIO control without buffer stages
High-Voltage Blocking	60 V OFF-state rating supports 48 V DC industrial bus switching and smart meter load control
Halogen-Free Construction	Meets JIS C0950 and IEC 61249-2-21 standards for environmentally compliant end-equipment
Thermal Derating Support	Specified ON-current down to 325 mA at 60°C ambient, with full 500 mA available at ≤25°C

Applications

Smart Electricity Meters	Factory Automation Controllers
Use Scenario: Isolating microcontroller-based metrology units from 230 V AC mains-connected relay drivers in Class 0.5S revenue-grade meters. IC Role / Device Role / Timing Role: Solid-state relay replacement providing galvanic isolation between low-voltage MCU and high-side load switching circuitry. Use Value: Eliminates mechanical wear, extends service life beyond 100,000 cycles, and maintains <1000 nA leakage at 60 V blocking.	Use Scenario: Controlling pneumatic valve solenoids and status indicators in PLC I/O modules operating in dusty, vibration-prone environments. IC Role / Device Role / Timing Role: Optically isolated output stage delivering 500 mA @ 24 V DC with <1 ms turn-on for synchronized machine motion sequences. Use Value: Reduces electromagnetic interference vs. mechanical relays and avoids contact bounce-induced false triggering in safety-critical sequencing.
Security System Panels	Amusement Equipment Logic
Use Scenario: Driving door lock actuators and alarm sirens in UL-listed intrusion detection panels requiring Class 2 power-limited circuit compliance. IC Role / Device Role / Timing Role: Normally-open photorelay enforcing safe power-off state during standby; activated only upon verified access credential match. Use Value: Meets UL 508 requirements for fail-safe operation and provides 5000 Vrms isolation between panel logic and field wiring.	Use Scenario: Enabling coin acceptor signals and prize payout solenoids in arcade cabinets subject to frequent on/off cycling and ESD exposure. IC Role / Device Role / Timing Role: High-reliability load switch interfacing 3.3 V microcontrollers to 12 V DC actuator rails with zero contact degradation. Use Value: Withstands >100,000 cycles without performance drift and maintains <2 Ω R_ON stability over –40°C to +85°C ambient.

Smart Electricity Meters

Factory Automation Controllers

Use Scenario: Isolating microcontroller-based metrology units from 230 V AC mains-connected relay drivers in Class 0.5S revenue-grade meters.

IC Role / Device Role / Timing Role: Solid-state relay replacement providing galvanic isolation between low-voltage MCU and high-side load switching circuitry.

Use Value: Eliminates mechanical wear, extends service life beyond 100,000 cycles, and maintains <1000 nA leakage at 60 V blocking.

Use Scenario: Controlling pneumatic valve solenoids and status indicators in PLC I/O modules operating in dusty, vibration-prone environments.

IC Role / Device Role / Timing Role: Optically isolated output stage delivering 500 mA @ 24 V DC with <1 ms turn-on for synchronized machine motion sequences.

Use Value: Reduces electromagnetic interference vs. mechanical relays and avoids contact bounce-induced false triggering in safety-critical sequencing.

Security System Panels

Amusement Equipment Logic

Use Scenario: Driving door lock actuators and alarm sirens in UL-listed intrusion detection panels requiring Class 2 power-limited circuit compliance.

IC Role / Device Role / Timing Role: Normally-open photorelay enforcing safe power-off state during standby; activated only upon verified access credential match.

Use Value: Meets UL 508 requirements for fail-safe operation and provides 5000 Vrms isolation between panel logic and field wiring.

Use Scenario: Enabling coin acceptor signals and prize payout solenoids in arcade cabinets subject to frequent on/off cycling and ESD exposure.

IC Role / Device Role / Timing Role: High-reliability load switch interfacing 3.3 V microcontrollers to 12 V DC actuator rails with zero contact degradation.

Use Value: Withstands >100,000 cycles without performance drift and maintains <2 Ω R_ON stability over –40°C to +85°C ambient.

Equivalent & Alternatives

The following parts are listed as comparable options for similar photorelay applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLP240AF	10.16-mm pitch DIP-4 package; 8.0 mm creepage/clearance vs. 7.0 mm; same electrical specs	Required where higher pollution degree (PD3) or wider spacing is mandated by end-equipment safety standards	Select TLP240AF when board layout allows larger pitch and enhanced creepage is needed for EN 62368-1 Annex BB compliance
PS2701-1	Lower isolation voltage (3750 Vrms); 50 mA max ON-current; TO-5 package; no UL 508 listing	Suitable only for non-mains-isolated, low-power signal-level switching (e.g., sensor interface logic)	Choose PS2701-1 only for cost-sensitive, low-current applications where reinforced insulation is not required

Compared with TLP240AF, the TLP240A(LF1,F) offers tighter 7.62-mm pitch for space-constrained meter PCBs, while PS2701-1 lacks the safety certifications and current capability needed for industrial relay replacement - making TLP240A(LF1,F) the only option qualified for UL 508–compliant 48 V DC load switching.

Availability

TLP240A(LF1,F) is available at Aetrix Electronics and suitable for smart metering, factory automation, security system design, and amusement equipment development requiring stable component supply and long-term lifecycle support.

Supply support for TLP240A(LF1,F) includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Toshiba Electronic Devices & Storage Corporation designs high-reliability semiconductor components for industrial, automotive, and consumer applications, with emphasis on safety-certified isolation and power efficiency.

The TLP240A(LF1,F) belongs to Toshiba's photorelay product line engineered specifically for mechanical relay replacement in safety-critical, high-cycle-count applications such as electricity meters and programmable logic controllers.

FAQ

What safety certifications apply to the TLP240A(LF1,F)?

The TLP240A(LF1,F) is UL-recognized under UL 1577 (File E67349) and UL 508 (File E499232), cUL-recognized per CSA Component Acceptance Service No.5A (E67349), CQC-approved to GB4943.1/GB8898, and VDE-approved to EN 60747-5-5 and EN 62368-1 when ordered with Option D4. These certifications validate its use in reinforced insulation applications up to 5000 Vrms.

Can the TLP240A(LF1,F) replace a mechanical relay in a 48 V DC control circuit?

Yes - the TLP240A(LF1,F) supports up to 60 V OFF-state voltage and 500 mA continuous ON-state current, making it suitable for 48 V DC industrial control circuits. Its 2 Ω max ON-resistance results in ≤500 mW conduction loss, and its 1 ms turn-on time ensures responsive actuation. Confirm thermal derating per ambient temperature using the I_ON–T_a curve in the datasheet.

What is the meaning of "(LF1,F)" in TLP240A(LF1,F)?

In TLP240A(LF1,F), "LF1" denotes the lead-forming option for surface-mount compatibility (gull-wing bend), and "F" indicates RoHS-compliant, halogen-free packaging per JIS C0950. This variant retains the standard 7.62-mm pitch DIP-4 footprint but enables reflow-compatible assembly while meeting environmental compliance requirements for global markets.

How does the TLP240A(LF1,F) handle thermal derating at elevated temperatures?

The TLP240A(LF1,F) specifies 500 mA max ON-state current at T_a = 25°C, derating linearly to 325 mA at 60°C ambient (per UL 508 conditions). The absolute maximum junction temperature is 105°C. Designers must calculate power dissipation (I²R_ON) and ensure board-level thermal resistance keeps T_j within limit - especially critical in enclosed smart meter housings.

Is the TLP240A(LF1,F) pin-compatible with other TLP240x variants?

Yes - all TLP240A and TLP240AF variants share identical pin assignment (Anode/Cathode/Drain/Drain) and internal two-terminal configuration (pins 1–2 and 3–4 shorted). However, TLP240A(LF1,F) uses 7.62-mm pitch, while TLP240AF uses 10.16-mm pitch; physical PCB footprints are not interchangeable despite functional equivalence.

TLP240A(LF1,F Specifications

Product attributes: Attribute value

Manufacturer:: Toshiba Semiconductor and Storage

Series:: TLP240A

Packaging:: Tube

Product Status:: Active

Mounting Type:: Surface Mount

Circuit:: SPST-NO (1 Form A)

Output Type:: AC, DC

Voltage - Input:: 1.27VDC

Voltage - Load:: 0 V ~ 60 V

Load Current:: 500 mA

On-State Resistance (Max):: 2 Ohms

Termination Style:: Gull Wing

Operating Temperature:: -40°C ~ 85°C

Supplier Device Package:: 4-SMD

Approval Agency:: CQC, cUL, UL, VDE

Grade:: -

Qualification:: -

TLP240A(LF1,F FAQ

1.How can I place an order for TLP240A(LF1,F through Aetrix?

Please submit a Request for Quotation (RFQ) for TLP240A(LF1,F on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TLP240A(LF1,F reliable?

The price and inventory of TLP240A(LF1,F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLP240A(LF1,F is usually 5 days.

3.What payment methods are accepted for TLP240A(LF1,F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLP240A(LF1,F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLP240A(LF1,F?

TLP240A(LF1,F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLP240A(LF1,F order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TLP240A(LF1,F?

For technical support, including TLP240A(LF1,F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLP240A(LF1,F requirements.

6.How does Aetrix verify that TLP240A(LF1,F is sourced from the original manufacturer or authorized distributors?

All TLP240A(LF1,F products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLP240A(LF1,F meets industry standards.

7.What is the process for return or replacement of TLP240A(LF1,F?

All TLP240A(LF1,F units undergo pre-shipment inspection (PSI). If there is an issue with TLP240A(LF1,F, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TLP240A(LF1,F part is unused and in its original packaging.

Return procedure for TLP240A(LF1,F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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